| 摘要 |
PURPOSE:To increase the production efficiency of a ball bearing and to make possible the quality uniform, by making the operation automated and continuous, in adjusting and grinding means for adjusting and grinding the end surfaces of an inner or outer ring of a ball bearing. CONSTITUTION:In the flow chart of the method of grinding, GA and GB are values that will be obtained by measuring the end surfaces of the inner ring and outer ring of the ball bearing to be machined by a measuring apparatus. At every definite short interval, sampling values of GA and GB are digitized to obtain the average values at every rotation. These average values GA and GB are calculated at every rotation of a work head, and the difference GAV=the average GB-the average GA is also calculated at every rotation. Based upon the calculated difference GAV, the feeding rate of the grind stone is determined to grind the end surfaces of the inner ring of the ball bearing. Thus, the operation for improving the accuracy of the differential width is made automated and continuous, so that the production efficiency can be improved and the quality can be made uniform. |
